<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>
<script>
export default {
  created() {
    //在页面加载时读取localStorage里的状态信息
    localStorage.getItem("userMsg") &&
      this.$store.replaceState(
        Object.assign(JSON.parse(localStorage.getItem("userMsg")))
      );

    //在页面刷新时将vuex里的信息保存到localStorage里
    window.addEventListener("beforeunload", () => {
      localStorage.setItem("userMsg", JSON.stringify(this.$store.state));
    });
  }
};
</script>
<style lang='scss'>
</style>
